The olive oil and tahini is where the massive calories are, so I cut back a little on those. About an ounce (1/8 cup) of each for a can of garbanzos. It's not as rich and delicious as store-bought, but I bet I know why. Same reason things are better soaked in butter! A little extra garlic, salt, lemon juice will pep it up.
I like to sprinkle Greek seasoning mix on, if I don't have that red sumac stuff.
For a long time I had a recipe that said to drain half the juice out of the can of beans. My hummus was always kinda runny and slimy, and other people made really good pasty stuff. I finally got the brilliant idea (duh) to drain all the liquid, and viola, much better.